Table 4.
DNA binding properties of different nucleotide states of rGyr_hel
Kd (μM) | nucleotide-free | ADP state | ATP state | ||
---|---|---|---|---|---|
ssDNA | |||||
wt | 0.20 ± 0.03a | ADP | 0.31 ± 0.04a | ADPNP | 0.60 ± 0.07a |
0.20 ± 0.01b | 0.28 ± 0.01b | 0.46 ± 0.03b | |||
n = 1.4 ± 0.1 | n=1.6 ± 0.1 | n=1.4 ± 0.1 | |||
ADPCP | 0.38 ± 0.05a | ATPγS | 1.2 ± 0.2a | ||
0.33 ± 0.01b | 0.92 ± 0.21b | ||||
n=1.6 ± 0.1 | n=1.2 ± 0.2 | ||||
K106Q | 0.18 ± 0.03a | 0.25 ± 0.03a | 0.19 ± 0.02a | ||
0.18 ± 0.03b | 0.24 ± 0.02b | 0.20 ± 0.02b | |||
n = 1.3 ± 0.2 | n=1.3 ± 0.1 | n=1.1 ± 0.1 | |||
dsDNA | |||||
wt | 3.9 ± 0.6 a | ADP | 3.7 ± 0.5a | ADPNP | 0.19 ± 0.03a |
ADPCP | 4.2 ± 0.3a | ATPγS | 1.0 ± 0.1 a | ||
K106Q | 3.8 ± 0.6 a | 2.9 ± 0.6 a | 1.7 ± 0.2 a |
aOne-site.
bHill analysis.